Gas turbine engine system with generator

A method for operating a system including a gas turbine engine, the gas turbine engine comprising a high-pressure (HP) shaft;

• a HP compressor;
• a HP turbine, the HP turbine coupled to the HP compressor via the HP shaft;
• a second shaft;
• a second compressor;
• a second turbine, the second turbine being coupled to the second compressor via the second shaft;
• and a generator coupled to the second shaft, the method comprising:
• generating, using the generator, electrical power from a rotation of the second shaft;
• receiving, by a controller, a manual command during normal operating conditions to reduce engine thrust produced by the gas turbine engine, the command being generated based on an engine thrust lever being reduced;
• reducing, in response to receiving the command, the engine thrust produced by the engine, wherein the reduction of the engine thrust includes decelerating rotation of the HP shaft;
• and
• increasing, in response to receiving the command to reduce the engine thrust, the electrical power generated by the generator to increase a torque applied to the second shaft by the generator in combination with the commanded reduction in engine thrust, and wherein the torque applied to the second shaft opposes the rotation of the second shaft and reduces a rotational speed of the second shaft.